PLL circuit with selectable current charging

Details PLL circuit with selectable current charging PLL circuit with selectable current charging

1983-12-07

1986-02-11

Laroche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular frequency control means

331 8, 331 17, 331 34, H03L 700

Patent

active

045701318

ABSTRACT:
A PLL circuit arrangement comprising a voltage controlled oscillator, the frequency of which is determined by the alternating charging and discharging of a capacitor, and a phase comparator, to a first input of which the output signal of the voltage controlled oscillator is supplied and to a second input of which a reference signal is supplied and from the output signal of which the signal controlling the oscillator is derived, wherein the capacitor can be charged by means of a current source circuit having a current intensity which can be switched over, the current intensity of the current source circuit can be switched over to a different value during each charging process, and wherein the moment of switching over of the current source circuit can be changed as a function of the output signal of the phase comparator.

REFERENCES:
patent: 3714463 (1973-01-01), DeLaune
patent: 3924202 (1975-12-01), Craft

Affiliated with

Also associated with

Rating

PLL circuit with selectable current charging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PLL circuit with selectable current charging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PLL circuit with selectable current charging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1207977